Why we love to hate conspiracy theories: 911 Truth as threat to the intelligentsia

Especially left and liberal professionals and service intellectuals but also right-wing members of the intelligentsia vehemently attack and ridicule “conspiracy theories” such as the present 911 Truth movement.

Why?

It’s as though power did not covertly orchestrate its predation of us? Is that not the modus operandi of power?

Is it so difficult to believe that the complex and highly successful military attack on US soil that was 911 (levelling three gigantic sky scrapers, blasting a hole into the Pentagon, and destroying four commercial jets and their passengers) was not orchestrated by a religious zealot from a cave in Afghanistan and executed by failed Cessna pilot trainees with box cutters? Or that those who measurably benefited in the trillions had nothing to do with it?

What the hell? Not even (admittedly rare) authoritative mainstream reports seem to matter [1].